Band Math & Broadband Calculator

Band Math & Broadband Calculator Help Band Math & Broadband Calculator

Overview

Band Math performs arithmetic and mathematical operations between hyperspectral bands or between a band and a broadband image.

Use the A and B sliders to choose individual spectral bands. If wavelength metadata are available, the selected wavelength and band number are shown together.

Enable "Use A/B as range" to interpret A and B as the start and end of a spectral range. The selected Broadband operation creates C from all bands in that range.

• Average — mean intensity across the selected range.
• Sum — sum of intensities across the selected range.
• Max — maximum value across the selected range.
• Min — minimum value across the selected range.
• Std — standard deviation across the selected range.
• Median — median value across the selected range.

A and B are the selected single-band images. C is the broadband image when broadband mode is used.

Available examples include A+B, A-B, B-A, A.*B, A./B, B./A, normalized difference, logarithms, square root, exponential, and Normalize A.

Choose "Custom equation" and enter an expression using A, B, C, eps, log, sqrt, exp, abs, mean, max, min, std, or median.

Computes the selected operation and displays the result in the main image axes. This changes the displayed image but does not by itself replace the stored hyperspectral datacube.

Select the display colormap used for the computed result. This affects visualization only.

When enabled, display limits are estimated from the 1st and 99th percentiles of finite result values.

Create A-sweep Datacube Vs Fixed B

Creates a new datacube in which A is swept from band 1 through the last band while B remains fixed at the selected B band. The selected operation is applied at every A band.

Important: creating the A-sweep datacube replaces the current working dataset with the generated result. The operation is recorded in IDCubePro history.

Tips

• Use ratios or normalized differences to reduce overall intensity scaling.
• Avoid noisy denominator bands in ratio operations.
• Use wavelength metadata whenever possible for reproducible band selection.
• Preview the result before creating an A-sweep datacube.